Buffer overflow in Libass Project
CVE-2020-36430
libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
Vulnerability class: Buffer Overflow
EPSS: 0.011 (61.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Libass_project Libass
- Fedoraproject Fedora — versions 34
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2020-36430?
- CVE-2020-36430 is a high-severity vulnerability in Libass Project, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-07-20.
- How severe is CVE-2020-36430?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-36430 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.